Trees, shrubs, bushes, and other vegetation can be the subject of neighbor disputes. If you are not able to resolve an issue by talking to your neighbor, the law may provide some relief.

For example, if your neighbor’s tree extends onto your property and blocks your view, blocks sunlight, sheds pollen, acorns, leaves, or other foliage—or otherwise interferes with your use and enjoyment of your property—it may constitute a nuisance and you may be able to get help (relief) from the civil court system.

In some states you may have the right to trim a tree to the property line or boundary. But in some states an overhanging tree may have acquired the right to be there through an easement by prescription or prescriptive easement, for example.

But if a tree is on or near the property line and the tree and its root structure extends onto both properties, you generally may not remove it or kill it without your neighbor’s consent. And some municipalities place restrictions on the removal of trees.

Trees with dead or decaying branches can also create liability for a landowner if they fall and cause personal injuries to guests, neighbors, or members of the public—or cause property damage to a neighboring property or motor vehicle, for example.

Laws regarding trees, shrubs, bushes, and other vegetation on neighboring properties may vary from state to state and may be included in a state’s statutes or in its court opinions—also known as common law or case law. And there may be municipal ordinances (laws enacted by local governments in cities and towns) that govern these issues.

In Hawaii, disputes over trees and vegetation between neighbors are governed by state law and local ordinances. If a neighbor's tree extends onto your property and causes issues such as blocking views, sunlight, or shedding debris, it may be considered a nuisance, and you might seek relief through the civil court system. Hawaii law generally allows property owners to trim branches and roots that encroach onto their property up to the property line. However, before doing so, it is important to check for any local ordinances that may have specific regulations regarding tree trimming or removal. Additionally, if a tree is situated on the boundary line between properties, it is typically considered a boundary tree, and both property owners own the tree jointly. In such cases, you cannot remove or significantly alter the tree without the consent of your neighbor. Regarding liability, a property owner in Hawaii may be held responsible if a tree on their property has dead or decaying branches that fall and cause injury or property damage. It's advisable to consult with an attorney to understand the specific legal remedies and obligations in your situation, as well as to ensure compliance with any municipal ordinances that may apply.